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fix ropes format errors (#16106) [backport:1.0]

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* fix rope index

* add testcase

* fix ropes format
This commit is contained in:
flywind 2020-11-24 02:23:52 +08:00 • committed by GitHub
commit 0c6c4be0e7
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2 changed files with 8 additions and 1 deletions
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2
lib/pure/ropes.nim
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@ -262,7 +262,7 @@ proc `%`*(frmt: string, args: openArray[Rope]): Rope {.
while true: while true:
j = j * 10 + ord(frmt[i]) - ord('0') j = j * 10 + ord(frmt[i]) - ord('0')
inc(i) inc(i)
if frmt[i] notin {'0'..'9'}: break if i >= frmt.len or frmt[i] notin {'0'..'9'}: break
add(result, args[j-1]) add(result, args[j-1])
of '{': of '{':
inc(i) inc(i)

7
tests/stdlib/tropes.nim
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@ -64,3 +64,10 @@ block:
inc i inc i
doAssert r[66] == '\0' doAssert r[66] == '\0'
block:
let r1 = "$1 $2 $3" % [rope("Nim"), rope("is"), rope("a great language")]
doAssert $r1 == "Nim is a great language"
let r2 = "$# $# $#" % [rope("Nim"), rope("is"), rope("a great language")]
doAssert $r2 == "Nim is a great language"